Microgrids, their types, and applications

Mittal, Ayush; Rajput, Aryan; Johar, Kamya; Kandari, Ritu

doi:10.1016/b978-0-323-85463-4.00008-3

Cited by 5 publications

(2 citation statements)

References 63 publications

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“…When the Z-SSCB is used to protect a dc load, the Z-SSCB will remain unaffected by the system configuration mode (e.g. radial, ring or interconnected [35]) as long as the input and output of the Z-SSCB coincide with the input and output of the dc load to be protected.…”

Section: Bidirectional Protectionmentioning

confidence: 99%

A Fault Protection Strategy Based on Z-Source Solid State Circuit Breaker for More Electric Aircraft

Wang,

Tao,

Wang

et al. 2024

IEEE Trans. Transp. Electrific.

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High-voltage direct-current (HVDC) rated at 270 Vdc is one of the main power supply technologies expected for future more electric aircraft (MEA). However, dc protection is still one major challenge preventing the wide deployment of HVDC. To overcome this, Z-source solid-state circuit breakers (Z-SSCBs) could be employed due to their simple structure and fast speed of response. However, Z-SSCBs alone cannot effectively isolate a short-circuit fault when a large fault resistance and a small fault current ramp rate are present, which would greatly damage MEA. In this paper, an auxiliary protection strategy based on Z-SSCBs is presented to address this problem. The strategy combines inverse-time overcurrent and voltage protection to force the opening of the Z-SSCB when its automatic triggering fails. The principle of operation of a Z-SSCB is discussed, and the design process of the protection strategy is presented in detail. Software simulations using Saber and experimental tests have been carried out to validate the protection strategy. Both sets of results match well, offering a good performance and meeting IEEE protection (Std C37.112-2018) and aircraft electrical standards (MIL-STD-704F). It is shown that with the auxiliary protection strategy, the Z-SSCB successfully isolates faults against overcurrent, overvoltage and undervoltage operating conditions.

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Section: Bidirectional Protectionmentioning

confidence: 99%

A Fault Protection Strategy Based on Z-Source Solid State Circuit Breaker for More Electric Aircraft

Wang,

Tao,

Wang

et al. 2024

IEEE Trans. Transp. Electrific.

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“…Microgrids are developed by transmission and distribution grids. Microgrids helps to reduce or eliminate intermittencies, voltage and frequency drops, blackouts, and power surges that are increasingly becoming worse in many regions of the world due to population increase and urbanization [10,11].…”

Section: Introductionmentioning

confidence: 99%

Techno-Environmental Analysis of a Microgrid Energy System in a University Office Complex

Almohaimeed

2023

Sustainability

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The world is undergoing an irreversible shift towards clean energy. Microgrids are recognized as a key technology that holds significant potential to make a substantial difference in this regard. The paper provides a comprehensive overview of how microgrids work and their impact on climate. The research presented in this paper focuses on reducing carbon dioxide (CO2) in the main campus of Qassim University, Saudi Arabia, through the development and implementation of an engineering model that facilitates the installation of a microgrid system designed to meet the university’s sustainability goals. The study aims to explore possible solutions that can reduce emissions in the administrative building (A7) at Qassim University and meet the university environmental plan. Therefore, a comprehensive study is conducted to investigate the potential reduction in emissions associated with the installation of a microgrid system. This microgrid system operates in a grid-connected mode and comprises three main components: the load, a photovoltaic (PV) system, and batteries. The results of the study indicate that the microgrid reveals a notable transition in the primary sources of electricity. Moreover, the microgrid system proves its capability to meet a substantial portion of the daily energy requirements, highlighting its efficiency and effectiveness in addressing energy needs. The findings of this study highlight the significant potential of the proposed model in curbing carbon emissions, as it demonstrates a reduction from 615.8 to 147.4 Mt of CO2. This reduction aligns with the university’s commitment to sustainability and green initiatives. The computed decrease in carbon footprint emphasizes the possibility of the suggested model to encourage sustainable practices among the university community and mitigate the environmental consequences of energy usage.

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